Spark and cinder arrester.



' N0. 757,270= PATENTED APR. 12, 1904.

W. s. OAVENDER.

,SPARK 'AND GINDER ARRBSTBR.

APPLICATION FILED NOV. 12, 1903.

N0 MODEL.

we. ammo.

' I pm. Tarps Patented April 12, 1904..

ATENT FHQE.

sPAhK AND CINDTEHYARRESTER.

SPEGIFIGATION forming part of Letters Patent No. 757,270, dated April 12, 11904.. Application fine November 12, 1903. BerialNo-1B0,931. (No model.)

To all whom it may concern:

Be it known that I, WALDO S. Cavnnnnn, a citizenof the United States, residing at Wil lard, in the county of Alexander and State of Illinois, have invented a new and useful Spark and Cinder Arrester, of which the following is a specification.

This invention relates to spark and cinder arresters for the smokestacks of locomotives, steamhoats, and the-like.

'lihe principal object of the invention is to provide a simple device which may be readily attached to the smoke-stack of a locomotive or steamboat and which without interfering materially with the draft of-the engine or steamboat will effectively arrest sparks and cinder-s passing upward through the smokestack and will convey them rearward and downward to suitable points of discharge.

Another object of the invention is to provide a cinder and spark arrester with improved clamping means for securing it to smokestacks of difierent sizes.

In describing the invention reference will be had to the accompanying drawings,in which the preferred form of embodiment of the invention is shown as applied to a locomotive, into the fire-box of which the sparks and cinj are discharged.

in the drawings, Figure 1 .is a side elevation of a locomotive, showing the spark and cinder arrester. applied thereto. .-Fig; 2 is a View in front elevation of the structure shown in Fig. 1. Fig. 3 is a perspective view of the spark and cinder arrester without the tubular conduits. Fig. 4 is a detail view in section on the line 4 4 of Fig. 1, showing the arrangement of the damper, by means of which the smoke and cinders may be directedinto the allowed topass out into the open fire-box or air. I Q

Referring to the drawings, in which corresponding parts are designated by similar characters of refeie'nce. L designates-the locomotive, which has a smoke-stack S'of cylindrical form. The 'spark and cinder arrester shown as mountedupon the smoke-stack, and consists of a pair of wings 1 1 of volfite form united along a concave curve 2. The wings.

1 1 are formed, preferably, of sheet metal of suitable thickness and are of anydesired or necessary dimensions, the sizefor the ordinary locomotive having a spread of about sixteen inches and rising above the, top of the smoke-stack to a height of about eighteen inches. The line 2 upon which the two wings; are joined is sharp lycurveiiso that when the arrester is in ofidrative position above the smoke-stack the line of juncture of the two wings extends across thetop of the smokestack, as shown, and thence downward at the back. Each of the wings I 1 is continuous with a tube 3 of suitable dimdnsions, whose end is flared to join onto the' wing. The H tubes 3 extend downward, outward, and rearward to thesides of the fire-box and may then bedirectcd inward to discharge upon the fire. Each of the tubes 3 is provided at the point where it bends inward with a pivoted damper 3 to direct the sparks into the firebox or to allow them to pass directly out at the rear end of the tube. means of securing the arr-ester in position is The preferred a clamp consisting of resilient rods ,or heavy wires 4:, attached at one end to the two wings, near'the front pf the upper surface thereof. The other ends of the members 4 areattached t0 the upper surface of the wings atthc rear, and the two members are bent at 5 to present oppositely-disposed curves adapted to cdntact with the outer surface of the smoke-stack. At the front ends of the curves 5 the members ,4 are bent sharply upward, and they present oppositely-disposed curves t-, as best seen in Fig. 2, in which the two members 4 are shown as drawn together by means of a slide/7, which is freely movable on the' curved portions 6, -Which lie between the curves 5 and the forward ends of the members. When the slide 7 is raised, the memhere 4 may be separated, as shown in dotted lines in Fig. 2; and when so separated may be easily slipped over the top of a smoke-stack of 'ordinary size and design. When the arrester is in position above the smoke-stack, the slide 7 will be forced downwardto the position shown in Fig. 2, and the curved por-- tions 5 of the. members 4 will be drawn into close engagement with the sides of the smokestack, thereby securing the arrcster in operative position on the stack.

The operation of the s 'iark-arrestcrwill be readily understood from the description and from an inspection of the drawings. The mixture of smoke, cinders, sparks, and gases formed in the lire-box ot' the engine will im pinge upon the inclined concave under surfaces of the two wings and will be driven rearward by the current of air developed by the forward movement of the engine. rearwardly-drivcn sparks and cinders will be deflected downward and outward by the wings,

and the sparks will be extinguished by contact with the wings. At the same time the heavier sparks and cinders will be carried downward and rearward through the tubes 3. The tubes 3 will not only serve as conduits for the sparks and cinders, but a considerable quantity of air will be driven through the tubes along with the extinguished sparks and the cinders, sothat the blast directed into the lire-box by means of the sparkarrester will be efi'ective in increasing the draft'in the lire-box, while at the same time the composition of the smoke and cinders is assured. a

If the spark-arrester is designed for use upon a steamboat or under any circumstances which render it impracticable todirect the sparks and cinders into the lire-box to insure the destruction thereof,'the tubes 3 may be d ispensed with and theartester-used in the form illustrated in l ig.-3,"in ..which' the arr-ester is shown as consistingmerely'. of thedeflectingwings and the means for clamping the wings in ope ative position-above the smoke-stack.

While 1 have sho wnfand deseribed'the preferred form of embodiment of my invention, it will be obvious thatvar-ious changesin the form and proportionsof the members, as well as in their mode of assemblage, may be made without departing from the spirit of the invention or sacrificing an, of its advantages,

and I do not limit myself to the exact struc ture shown, but reserve the rightto make I such changes therein as lie within the scope ofthe appended claims.

Having thus descril' d the construction and op'cration'ot' my invention, what] claim as new, and desire to secure by Letters Patent, 1s'-- l. The combination in'a device of the class described, of a pair of deflecting-wings each presenting a deflecting-surface curved upward, outward, rearward,aial downward, said The wings being united upon a curved line and having the rear ends thereof disposed at a lower level than the forward ends, and means for securing said wings in position above a smoke-stack, said securing means includin, A pair of resilient members each attached at one end to one ofthe deflecting-wings at its forward end, extending downward from said points of attachment to about thelevel of the rear ends of said wings, being bent at that point and extending rearwardly to be attached to the rear portion of the deflecting-wing to which its forward end is attached, the rearwardly-extending portions of said resilient members being curved to correspond to the dimensions of a Smokestack, and means pro- -ing them into clamping engagement with a smoke-stack.

.2. The combination in a device of the class described, of a pairofcurved deflecting-wings joined upon a curved line extending from above a smoke-stack rearward and downward behind the smoke-stack, and means for securing said deflecting-wings in position, said members attached'at their ends to said wings and each consisting of a downwardly-extending portion and a rearwardly-extendingpor-' tion, said downwardly-extending portions :be-. ing normally divergent and said rearwardlyextending portions being curved to correspond to the outside of a" smoke-stack, and a slide permanently, secured upon the downwardlyextending portions of said resilient members engagement with the smoke-stack.

, 3. The combination with means at the top of a smoke-stack for deflecting the products of combustion downward and rearward, of conduits leading into the fire-box of the engine but having openings therein through which the products of combustion may be allowed to escape into the outer air, and dampers provided in said conduits to direct the products to'pass into the open air.

the presence of two witnesses.

- .Witneeses:

,l. L. Bownns, .B. F. U'rnnr.

securing means including a pair of resilient of combustion into the firebox or allow them i in testimony that I claim the 'foregoing as' my own I have hereto afilxed my'signaturem- WALDO sensuous,

vided upon said resilient members for forcto force said resilient membcrs into clamping duits to convcysaid products of combustionrearward from said deflecting means, said con- I 

